WO2014131265A1 - 一种双透镜变焦手电筒 - Google Patents

一种双透镜变焦手电筒 Download PDF

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Publication number
WO2014131265A1
WO2014131265A1 PCT/CN2013/080500 CN2013080500W WO2014131265A1 WO 2014131265 A1 WO2014131265 A1 WO 2014131265A1 CN 2013080500 W CN2013080500 W CN 2013080500W WO 2014131265 A1 WO2014131265 A1 WO 2014131265A1
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Prior art keywords
lens
ring
plano
convex
disposed
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PCT/CN2013/080500
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English (en)
French (fr)
Inventor
陈贤青
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Chen Xianqing
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Publication of WO2014131265A1 publication Critical patent/WO2014131265A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L4/00—Electric lighting devices with self-contained electric batteries or cells
    • F21L4/005—Electric lighting devices with self-contained electric batteries or cells the device being a pocket lamp
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L4/00—Electric lighting devices with self-contained electric batteries or cells
    • F21L4/04—Electric lighting devices with self-contained electric batteries or cells characterised by the provision of a light source housing portion adjustably fixed to the remainder of the device
    • F21L4/045—Pocket lamps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/06—Controlling the distribution of the light emitted by adjustment of elements by movement of refractors
    • F21V14/065—Controlling the distribution of the light emitted by adjustment of elements by movement of refractors in portable lighting devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/008—Combination of two or more successive refractors along an optical axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the invention belongs to the technical field of lighting fixtures, in particular to a double lens zooming flashlight.
  • flashlights In order to meet the needs of people's daily life and various lighting in their work, various lighting fixtures have appeared, and the flashlight is widely used because of its light weight and convenient carrying.
  • Ordinary flashlights generally include the main components such as the cylinder, the lamp head, the light-emitting components, and the battery. Most of them are not adjustable, and the range and brightness of the illumination cannot be adjusted. Therefore, in some occasions, the illumination range and brightness often cannot reach the working use. Claim.
  • zoomable flashlights such as the Chinese invention patent "Double-lens stepped zoom flashlight" with the patent number CN201210090919.5, which includes an LED light source, a moving lens, a fixed lens, a focusing cover, a cylinder, The steel ball and the spring are fixed; the fixed lens and the moving lens are both disposed perpendicular to the front optical axis of the LED light source; the distance between the fixed lens and the LED light source is constant, and the moving lens can move back and forth with respect to the LED light source.
  • the Chinese invention patent "Double-lens stepped zoom flashlight” with the patent number CN201210090919.5, which includes an LED light source, a moving lens, a fixed lens, a focusing cover, a cylinder, The steel ball and the spring are fixed; the fixed lens and the moving lens are both disposed perpendicular to the front optical axis of the LED light source; the distance between the fixed lens and the LED light source is constant, and the moving lens can move back and forth with respect to the
  • the irradiation area and brightness of the outgoing light can be adjusted by changing the distance between the moving lens and the LED light source; in addition, a certain number of fixing holes are provided on the barrel, and shallow grooves are arranged between the fixing holes, and the steel ball is used by the spring Pressed on the fixing hole, the steel ball can slide from one fixing hole to the other fixing hole along the shallow groove to realize the stepwise zoom positioning.
  • the flashlight can realize zooming, the structure is relatively complicated.
  • the moving lens is disposed on the moving lens holder.
  • a light-transmitting mirror is also required on the head ring of the lamp cap. When zooming, the moving lens holder is moved by rotating the focusing cover.
  • the technical problem to be solved by the present invention is to provide a simple structure for the current state of the art.
  • the convenient double-lens zoom flashlight can be used to adjust the illumination range and brightness through zoom, which has the characteristics of reasonable design and good lighting effect.
  • a dual lens zoom flashlight The utility model comprises a lamp cap, a cylinder body, a light-emitting component and two plano-convex lenses, wherein the lamp cap is sleeved on the front part of the cylinder body, rotates with the cylinder body and can be connected to the telescopic joint, and the two plano-convex lenses are both Vertically disposed on the front optical axis of the light-emitting element, wherein the first plano-convex lens is fixedly disposed at the front end of the cylinder, and the distance from the light-emitting element is constant, and the second plano-convex lens is disposed at the front end of the lamp cap, and can be along with the lamp cap and the barrel The rotational expansion and contraction moves back and forth with respect to the light-emitting element.
  • the The inner cavity of the cylinder is divided into two sections, wherein the front section is provided with a lamp holder for fixing the light-emitting element, the rear stage is provided with a battery compartment, the light-emitting element is disposed on the lamp holder, and the first plano-convex lens is disposed on the The front side of the light-emitting element is pressed and fixed to the lamp holder by a lens lock ring.
  • the front portion of the socket is formed with a convex ring that abuts against the front end of the cylinder, and an external thread is provided on the outer surface of the convex ring and the outer surface of the front portion of the socket, and the front wall of the front end of the cylinder
  • An internal thread corresponding to the external thread of the front portion of the lamp socket is disposed, and the lamp socket is disposed in the cylinder body by a screw connection, and is restrained by the convex ring engaging with the end surface of the cylinder body.
  • an inner side of the lens lock ring is provided with an internal thread that cooperates with an external thread of the convex ring, and an inner side of the convex ring is provided for the inner a step into which the first plano-convex lens is placed, the lens lock ring being sleeved on the convex ring, and being screwed and fixed to the lamp holder.
  • the cylinder An outer thread is formed on the outer side of the front portion, and a corresponding internal thread is disposed on the inner side of the rear end of the base.
  • the inner end of the internal thread structure of the base is formed with an enlarged diameter section for the telescopic movement of the cylinder.
  • the front portion is telescopically sleeved on the rear portion of the base by a threaded structure, and is restrained by the cooperation of the lens lock ring and the stepped surface of the enlarged diameter section.
  • the light-emitting element is an LED lamp mounted on the LED circuit board, nested in the lamp holder, and the LED lamp and the A pressure ring is disposed between the first plano-convex lenses, and a battery pack is disposed in the battery compartment, and the front end of the battery compartment is electrically connected to the LED circuit board.
  • the battery compartment is cylindrical, and has a receiving cavity for three batteries to be placed therein, and a waterproof ring and a locking ring are arranged at the tail of the battery compartment.
  • the front end of the lamp cap is screwed to a head ring, and the second plano-convex lens is disposed between the head ring and the lamp cap, and is fixedly fixed by a threaded connection of the head ring and the lamp cap.
  • the second plano-convex lens and the head ring are lined with a waterproof ring.
  • a tail cover is connected to the rear end of the cylinder body, and a control switch is disposed in the tail cover, and a rear end of the tail cover is provided with a circular hole through which a button for controlling the switch protrudes.
  • the invention has the advantages that zooming is performed by two plano-convex lenses, wherein the second plano-convex lens is fixed on the lamp cap, and the first plano-convex lens is disposed on the lamp holder, and the rotation of the barrel and the lamp cap is realized.
  • the change of the distance between the two so as to achieve the purpose of zooming, greatly improved Lighting range and brightness.
  • the invention has simple structure and reasonable design, and does not need to additionally provide a focusing cover and a light-transmitting mirror, so that the manufacturing is simple and the cost is greatly saved; and the cylinder can be stretched and stretched, which is convenient for carrying and collecting.
  • Figure 1 is a cross-sectional view showing the structure of the present invention in a state in which the cylinder is stretched;
  • Figure 2 is a cross-sectional view showing the structure of the cylinder in a contracted state
  • Figure 3 is an exploded view of the structure of the present invention.
  • FIG. 4 is a schematic perspective view of the present invention in a state in which the cylinder is stretched;
  • Figure 5 is a perspective view showing the three-dimensional structure of the present invention in a state in which the cylinder is in a contracted state;
  • Fig. 6 is a zoom light path diagram of the present invention during zooming, wherein a is a zoom initial light path diagram, and b is a zoom light path map.
  • a double lens zoom flashlight comprising a lamp cap 1 , a cylinder 2 , a tail cap 3 , an LED lamp 8 , a first plano-convex lens 5, the second plano-convex lens 4, the control switch 9, the battery compartment 7, and the like, the lamp cap 1 is placed on the front part of the cylinder 2, rotates with the cylinder 2 and can be connected to the telescopically, the first plano-convex lens 5 And the second plano-convex lens 4 is disposed perpendicular to the front optical axis of the LED lamp 8, wherein the first plano-convex lens 4 is fixedly disposed at the front end of the barrel, and the distance from the LED lamp 8 is constant, and the second plano-convex lens is fixed.
  • the second plano-convex lens 4 is disposed at the front end of the lamp cap 1, and can be moved back and forth with respect to the LED lamp 8 with the rotation of the lamp cap 1 and the cylinder body 2; the front end of the lamp cap 1 is screwed with a head ring 10, and the second plano-convex lens 4 is disposed between the head ring 10 and the lamp cap 1, is fixedly fixed by the threaded connection of the head ring 10 and the lamp cap 1, and is lined with an O-ring for waterproofing between the second plano-convex lens 4 and the head ring 10.
  • the inner cavity of the cylinder 2 is divided into two sections, the front section is provided with a lamp holder 6 for fixing the LED lamp 8, the rear section is provided with a battery compartment 7 , and the LED lamp 8 is mounted on the LED circuit board.
  • 81 is sleeved in the socket 6, the first plano-convex lens 5 is disposed in front of the LED lamp 8, and the first plano-convex lens 5 and the lamp holder 6 are pressed and fixed by a lens lock ring 83;
  • the lamp holder 6 The front portion is formed with a convex ring 61 that abuts against the front end of the tubular body 2, and an external thread is provided on the outer surface of the convex ring 61 and the outer surface of the front portion of the lamp holder 6, and the inner wall of the front end of the cylindrical body 2 is provided with a lamp Block 6
  • the external thread corresponding to the external thread of the front portion is disposed in the cylinder 2 by a screw connection, and is restrained by the convex
  • the utility model has a cylindrical shape, and is internally partitioned with a receiving cavity for three batteries 8 , and a waterproof ring 71 and a lock ring 72 are arranged at the tail of the battery compartment 7 , and the front end of the battery compartment 7 is provided with a contact and an LED circuit board 8
  • the tail cover 3 is disposed at the rear end of the barrel 2, and is screwed and fixed to the barrel 2.
  • the tail cover 3 is provided with a control switch 9, and the rear end of the tail cover 3 is provided with a button 91 for controlling the switch 9.
  • the optical path diagram of the zoom adjustment process is as shown in Fig. 6.
  • the combined lens structure enables the beam angle ⁇ emitted by the LED lamp 8 to be smaller, so that the luminous flux irradiated on the reference object by the same area is correspondingly increased, in Fig. 6 ( b)
  • the distance between the first plano-convex lens 5 and the second plano-convex lens 4 is increased, so that the beam angle ⁇ emitted by the LED lamp 8 becomes smaller, so that the luminous flux irradiated on the reference object by the same area is larger.

Abstract

一种双透镜变焦手电筒，包括灯头（1）、筒体（2）、发光元件（8）以及两个平凸透镜（5，4），其特征在于：灯头（1）套置在筒体（2）的前部，与筒体（2）成旋转并可相对伸缩地连接，两个平凸透镜（5，4）均垂直于发光元件（2）的前方光轴设置，其中第一平凸透镜（5）固定设置在筒体（2）前端，与发光元件（8）的距离恒定，第二平凸透镜（4）设置在灯头（1）的前端，并可随灯头（1）与筒体（2）的旋转伸缩相对于发光元件（8）做前后移动。手电筒通过两个透镜（5，4）组合进行变焦，通过筒体（2）或灯头（1）的旋转实现二者距离的变化，从而达到变焦的目的，提高了照明范围和亮度；结构简单涉及合理，不必再另外设置调焦盖和透光镜，使制造简单，节约了成本；筒体（2）可以伸缩，便于携带与收藏。

Description

一种双透镜变焦手电筒 技术领域
本发明属于 照明灯具技术领域，尤其是一种双透镜变焦手电筒。
背景技术
为了满足人们日常生活及工作中各种照明的需要，出现了各种各样的照明灯具，而手电筒由于轻巧、携带方便，被人们所广泛使用。普通的手电筒一般都是包括筒体、灯头、发光元件以及电池等主要部件，大都是不可调焦的，照明的范围及亮度都不能调节，因此在有些场合照明范围与亮度往往不能达到工作使用的要求。因此目前也出现了许多可变焦的手电筒，如专利号为CN201210090919.5的中国发明专利《双透镜有级变焦手电筒》，该手电筒包括LED光源、移动透镜、固定透镜、调焦盖、筒体、钢球及弹簧等；固定透镜和移动透镜均垂直于LED光源的前方光轴设置；固定透镜与LED光源之间的距离恒定，移动透镜可相对LED光源前后移动。通过改变移动透镜与LED光源之间的距离即可调节出射光线的照射区域和亮度；此外，筒体上设有一定数目的固定孔，各固定孔之间设有浅槽，利用弹簧将钢球压在固定孔上，钢球可沿浅槽从一固定孔滑入另一固定孔，以实现有级变焦定位。这种手电筒虽然可以实现变焦，但是结构比较复杂，移动透镜设置在移动透镜座上，在灯头的头圈上还需设置透光镜，变焦时，通过旋转调焦盖来带动移动透镜座的移动，这样势必在手电筒内设有可供移动透镜座来回移动的空腔，这使得手电筒的长度较长，且不能收缩，不利于携带收藏；同时定位机构也很复杂，不仅制造麻烦、成本高，而且也不利于维修，因此在结构上仍有待进一步改进。
本发明所要解决的技术问题是针对上述的技术现状而提供一种结构简单、 制造方便的双透镜变焦手电筒，可通过变焦调节照明范围和亮度，具有设计合理、照明效果好的特点。
本发明解决上述技术问题所采用的技术方案为： 一种 双透镜变焦手电筒 ，包括灯头、筒体、发光元件以及二个平凸透镜，其特征在于：所述灯头套置在筒体的前部，与筒体成旋转并可相对伸缩地连接，所述二个平凸透镜均垂直于发光元件的前方光轴设置，其中第一平凸透镜固定设置在在筒体的前端，与发光元件之间的距离恒定，第二平凸透镜设置在灯头的前端，并可随灯头与筒体的旋转伸缩相对于发光元件作前后移动。
作为改进， 所述 筒体的内腔分为前后两段，其中前段设置有用于固定发光元件的灯座，后段设置有电池仓，所述发光元件设置在灯座上，所述第一平凸透镜设于所述发光元件的前方，并通过一透镜锁圈将第一平凸透镜与灯座压紧固定。
作为改进，所述灯座的前部成型有与筒体的前端相抵的凸环，在凸环的外表面以及灯座前部的外表面上设有外螺纹，所述筒体的前端内壁上设有与所述灯座前部的外螺纹相对应的内螺纹，所述灯座通过螺纹连接设置在筒体内，并通过凸环与筒体的端面配合进行限位。
作为改进，所述透镜锁圈的内侧设有与所述凸环的外螺纹配合的内螺纹，所述凸环的内侧设有可供所述 第一平凸透镜置入的台阶， 所述透镜锁圈套置在所述凸环上，与所述灯座螺纹连接固定。
作为改进， 所述筒体的 前部外侧成型有外螺纹、所述灯头的后端内侧设有对应的内螺纹，所述灯头的内螺纹结构的里端成型有可供筒体伸缩活动的扩径段，所述筒体的前部通过螺纹结构可伸缩地套设在灯头的后部，并通过所述透镜锁圈与扩径段台阶面的配合进行限位。
再改进， 所述发光元件为一 LED 灯，安装在 LED 线路板上，套置在所述灯座内，在 LED 灯与所述 第一平凸透镜之间设有压环， 所述电池仓内设有电池组，电池仓的前端设有触点与 LED 线路板电性连接。
再改进， 所述电池仓为筒状，内分隔有可供三个电池置入的容置腔，在电池仓的尾部设有防水圈和锁圈。
进一步改进， 所述灯头的前部螺纹连接有一头圈，所述第二平凸透镜设于头圈与灯头之间，通过头圈与灯头的螺纹连接压紧固定。
再进一步改进，所述第二平凸透镜与所述头圈之间衬有防水圈。
最后， 所述筒体的后端连接有一尾盖，所述尾盖内设有控制开关，尾盖的后端设有可供控制开关的按钮伸出的圆孔。
与现有技术相比，本发明的优点在于：通过二个平凸透镜进行变焦，其中第二平凸透镜固定在灯头上，第一平凸透镜设置在灯座上，随着筒体与灯头的旋转实现二者距离的变化，从而达到变焦的目的，大大提高了 照明范围和亮度 。本发明结构简单，设计合理，不必再另外设置调焦盖和 透光镜，使得制造简单，还大大节约了成本；而且筒体可以伸缩，便于携带与收藏。
图 1 为 本发明在筒体拉伸状态下 的结构剖视图；
图 2 为本发明 在筒体收缩状态下 的结构剖视图；
图 3 本发明的结构分解图；
图 4 为 本发明在筒体拉伸状态下的立体结构示意图 ；
图 5 为 本发明在筒体收缩状态下 的 立体结构示意 图；
图 6 为 本发明 在变焦过程中的变焦光路图，其中 a 是变焦初始光路图， b 是变焦光路图。
以下结合附图实施例对本发明作进一步详细描述。
一种 双透镜变焦手电筒 ，包括灯头 1 、筒体 2 、 尾盖 3 、 LED 灯 8 、第一平凸透镜 5 、第二平凸透镜 4 、控制开关 9 、电池仓 7 等部件，灯头 1 套置在筒体 2 的前部，与筒体 2 成旋转并可相对伸缩地连接，第一平凸透镜 5 和第二平凸透镜 4 均垂直于 LED 灯 8 的前方光轴设置，其中第一平凸透镜 4 固定设置在在筒体的前端，与 LED 灯 8 之间的距离恒定，第二平凸透镜 4 设置在灯头 1 的前端，并可随灯头 1 与筒体 2 的旋转伸缩相对于 LED 灯 8 作前后移动；灯头 1 的前部螺纹连接有一头圈 10 ，第二平凸透镜 4 设于头圈 10 与灯头 1 之间，通过头圈 10 与灯头 1 的螺纹连接压紧固定，并在第二平凸透镜 4 与头圈 10 之间衬有用于防水的 O 型密封圈 11 ；筒体 2 的内腔分为前后两段，其中前段设置有用于固定 LED 灯 8 的灯座 6 ，后段设置有电池仓 7 ， LED 灯 8 安装在 LED 线路板 81 上、套置在灯座 6 内，第一平凸透镜 5 设于 LED 灯 8 的前方，并通过一透镜锁圈 83 将第一平凸透镜 5 与灯座 6 压紧固定； 灯座 6 的前部成型有与筒体 2 的前端相抵的凸环 61 ，在凸环 61 的外表面以及灯座 6 前部的外表面上设有外螺纹，筒体 2 的前端内壁上设有与灯座 6 前部的外螺纹相对应的内螺纹，灯座 6 通过螺纹连接设置在筒体 2 内，并通过凸环 61 与筒体 2 的端面配合进行限位；透镜锁圈 83 的内侧设有与凸环 61 的外螺纹配合的内螺纹，凸环 61 的内侧设有可供 第一平凸透镜 5 置入的台阶， 透镜锁圈 83 套置在凸环 61 上，与灯座 6 螺纹连接固定，从而将 第一平凸透镜 5 固定在 LED 灯 8 的前方 ；筒体 2 的 前部为与灯头 1 的后端相配合的缩径部，其外侧成型有外螺纹，灯头 1 的后端内侧设有对应的内螺纹，灯头 1 的内螺纹结构的里端成型有可供筒体 2 伸缩活动的扩径段，筒体 2 的前部通过螺纹结构可伸缩地套设在灯头 1 的内，并通过透镜锁圈 83 与扩径段台阶面的配合进行限位；这样只要旋转灯头 1 或筒体 2 ，使得第一平凸透镜 5 和第二平凸透镜 4 的距离发生变化，就可以根据需要进行变焦，非常方便；另外 在 LED 灯 8 与 第一平凸透镜 5 之间设有压环 82 ， 电池仓 7 为筒状，内分隔有可供三个电池 8 置入的容置腔，在电池仓 7 的尾部设有防水圈 71 和锁圈 72 ，电池仓 7 的前端设有触点与 LED 线路板 8 电性连接；尾盖 3 设于筒体 2 的后端，与筒体 2 螺纹连接固定，尾盖 3 内设有控制开关 9 ，尾盖 3 的后端设有可供控制开关 9 的按钮 91 伸出的圆孔。
变焦调节过程的光路图如图6所示，组合透镜结构能使LED灯8发出的光束角α变的更小，从而通过相同面积照射在参照物上的光通量则相应增大，在图 6 （ b ） 中，第一平凸透镜5和第二平凸透镜4的距离增大，使得LED灯8发出的光束角α变的更小，从而通过相同面积照射在参照物上的光通量则更大。

Claims (10)

  1. 一种双透镜变焦手电筒，包括灯头、筒体、发光元件以及二个平凸透镜，其特征在于：所述灯头套置在筒体的前部，与筒体成旋转并可相对伸缩地连接，所述二个平凸透镜均垂直于发光元件的前方光轴设置，其中第一平凸透镜固定设置在在筒体的前端，与发光元件之间的距离恒定，第二平凸透镜设置在灯头的前端，并可随灯头与筒体的旋转伸缩相对于发光元件作前后移动。
  2. 根据权利要求1所述的双透镜变焦手电筒，其特征在于所述筒体的内腔分为前后两段，其中前段设置有用于固定发光元件的灯座，后段设置有电池仓，所述发光元件设置在灯座上，所述第一平凸透镜设于所述发光元件的前方，并通过一透镜锁圈将第一平凸透镜与灯座压紧固定。
  3. 根据权利要求2所述的双透镜变焦手电筒，其特征在于所述灯座的前部成型有与筒体的前端相抵的凸环，在凸环的外表面以及灯座前部的外表面上设有外螺纹，所述筒体的前端内壁上设有与所述灯座前部的外螺纹相对应的内螺纹，所述灯座通过螺纹连接设置在筒体内，并通过凸环与筒体的端面配合进行限位。
  4. 根据权利要求3所述的双透镜变焦手电筒，其特征在于所述透镜锁圈的内侧设有与所述凸环的外螺纹配合的内螺纹，所述凸环的内侧设有可供所述第一平凸透镜置入的台阶，所述透镜锁圈套置在所述凸环上，与所述灯座螺纹连接固定。
  5. 根据权利要求2所述的双透镜变焦手电筒，其特征在于所述筒体的前部外侧成型有外螺纹、所述灯头的后端内侧设有对应的内螺纹，所述灯头的内螺纹结构的里端成型有可供筒体伸缩活动的扩径段，所述筒体的前部通过螺纹结构可伸缩地套设在灯头的后部，并通过所述透镜锁圈与扩径段台阶面的配合进行限位。
  6. 根据权利要求2所述的双透镜变焦手电筒，其特征在于所述发光元件为一LED灯，安装在LED线路板上，套置在所述灯座内，在LED灯与所述第一平凸透镜之间设有压环，所述电池仓内设有电池组，电池仓的前端设有触点与LED线路板电性连接。
  7. 根据权利要求6所述的双透镜变焦手电筒，其特征在于所述电池仓为筒状，内分隔有可供三个电池置入的容置腔，在电池仓的尾部设有防水圈和锁圈。
  8. 根据权利要求1至7任一权利要求所述的双透镜变焦手电筒，其特征在于所述灯头的前部螺纹连接有一头圈，所述第二平凸透镜设于头圈与灯头之间，通过头圈与灯头的螺纹连接压紧固定。
  9. 根据权利要求8所述的双透镜变焦手电筒，其特征在于所述第二平凸透镜与所述头圈之间衬有用于防水的O型密封圈。
  10. 根据权利要求1至7任一权利要求所述的双透镜变焦手电筒，其特征在于所述筒体的后端连接有一尾盖，所述尾盖内设有控制开关，尾盖的后端设有可供控制开关的按钮伸出的圆孔。
PCT/CN2013/080500 2013-02-26 2013-07-31 一种双透镜变焦手电筒 WO2014131265A1 (zh)

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